Power tube FAQ: What are power tubes?
The first power tube FAQ, of course, is about what they are. Also known as an output tube, a power tube is an electrical component, very similar to a transistor, that is built inside of a vacuum-sealed glass tube. Inside the glass tube are a filament, an anode, and a cathode.
Continue reading “Power Tube FAQ: EL84, EL34, and 6L6”
Preamp Tube FAQ: What is the most common Preamp Tube?
In answer to our first Preamp Tube FAQ, we can say that the 12AX7 is, by far, the most common type of Preamp Tube used in guitar amplifiers. The 12AX7 has the highest gain value, and it is, therefore, the one most preamps are designed to use. You can often substitute lower gain tubes for the 12AX7s without harming your amplifier.
Continue reading “Preamp Tube FAQ – Frequently Asked Questions about 12AX7, 12AT7, and 12AU7”
The 12AX7, 12AT7, and 12AU7 all belong to the same family of nine contact, twin triode tubes. In many cases, these tubes are interchangeable and can easily be swapped. We will take a look at why you might, or might not want to swap out the different types of tubes.
Continue reading “What is the Difference Between the 12AX7, 12AT7, and 12AU7 Preamp Tubes?”
Power tubes can have a dramatic effect on your amplifier’s sound. At low volumes, the difference between one tube and another can be difficult to decipher; it’s almost not worth talking about. Once you start to push a little air, however, your amplifier will show off what it can do and the power tube will display its individual characteristics more. Keep in mind, that by using pedals, you can make one amp sound pretty much like any other one, so this discussion is focused on how a few of the most popular power tubes differ from each other when using the amp, and not the pedals, to get your sound. Continue reading “Power Tube Differences: EL84, EL34, & 6L6”